Global Patent Index - EP 3075435 B1

EP 3075435 B1 20190619 - METHOD FOR REDUCING THE NITROGEN OXIDE CONCENTRATION IN GASES

Title (en)

METHOD FOR REDUCING THE NITROGEN OXIDE CONCENTRATION IN GASES

Title (de)

VERFAHREN ZUR VERRINGERUNG DES GEHALTES AN STICKOXIDEN IN GASEN

Title (fr)

PROCEDE DE REDUCTION DE LA TENEUR EN D'OXYDE D'AZOTE DANS LES GAZ

Publication

EP 3075435 B1 20190619 (DE)

Application

EP 16162227 A 20060427

Priority

  • DE 102005022650 A 20050511
  • EP 06742714 A 20060427
  • EP 2006003895 W 20060427

Abstract (en)

[origin: WO2006119870A1] According to the inventive method, a gas containing N<SUB>2</SUB>O and NO<SUB>x</SUB> is conducted across a series of two catalyst beds, and reducing agent for NO<SUB>x</SUB> and N<SUB>2</SUB>O is added between the catalyst beds at an amount that causes a predetermined percentage of N<SUB>2</SUB>O to be reduced in addition to NO<SUB>x</SUB>. The reaction conditions are adjusted such that the N<SUB>2</SUB>O concentration of the gas is decomposed by a maximum of 95 percent relative to the N<SUB>2</SUB>O concentration at the inlet of the first catalyst bed by being broken down into nitrogen and oxygen while the N<SUB>2</SUB>O is chemically reduced in addition to the NO<SUB>x</SUB> in the second catalyst bed such that the N<SUB>2</SUB>O concentration of the gas is reduced by a minimum of 50 percent relative to the N<SUB>2</SUB>O concentration at the inlet of the second catalyst bed.

IPC 8 full level

B01D 53/86 (2006.01)

CPC (source: EP KR US)

B01D 53/56 (2013.01 - KR); B01D 53/8628 (2013.01 - EP US); B01D 53/94 (2013.01 - KR); B01D 2251/202 (2013.01 - EP US); B01D 2251/204 (2013.01 - EP US); B01D 2251/2062 (2013.01 - EP US); B01D 2251/208 (2013.01 - EP US); B01D 2255/20738 (2013.01 - EP US); B01D 2255/50 (2013.01 - EP US); B01D 2257/402 (2013.01 - EP US); B01D 2257/404 (2013.01 - EP US); Y02C 20/10 (2013.01 - EP US)

Citation (opposition)

Opponent : Casale SA

  • WO 03105998 A1 20031224 - UHDE GMBH [DE], et al
  • US 2002127163 A1 20020912 - CHEN JAMES M [US], et al
  • WO 03084646 A1 20031016 - UHDE GMBH [DE], et al
  • US 2002044902 A1 20020418 - DELAHAY GERARD [FR], et al
  • ANONYMOUS: "N20 emissions reduction project at the new acid plant at Nitrogenmuvek Rt. - Project Design Document", VERTIS ENVIRONMENTAL FINANCE, 1 October 2004 (2004-10-01), pages i - iii,1-58, XP055359270, Retrieved from the Internet <URL:https://webapps.sgs.com/quality-network/full/Nitrogenmuvek%20Rt.pdf> [retrieved on 20170328]
  • MICHAEL GROVES, MAURER RAINER, SCHWEFER MEINHARD, SIEFERT ROLF: "Abatement of N 2 O and NO X Emissions from Nitric Acid Plants with the Uhde EnviNOx ® Process – Design, Operating Experience and Current Developments", NITROGEN 2006 INTERNATIONAL CONFERENCE VIENNA, AUSTRIA – MARCH 14 TH, 1 January 2006 (2006-01-01), pages 1 - 19, XP055711115, Retrieved from the Internet <URL:https://d13qmi8c46i38w.cloudfront.net/media/UCPthyssenkruppBAIS/assets.files/download_1/nitrates/uhde_publications_pdf_en_5000008.pdf> [retrieved on 20200702]
  • MICHAEL C E GROVES, RAINER MAURER: "N20 abatement in an EU nitric acid plant: a case study", INTERNATIONAL FERTILISER SOCIETY. PROCEEDINGS, INTERNATIONAL FERTILISER SOCIETY, GB, GB, pages 1 - 26, XP055359267, ISSN: 1466-1314

Opponent : Yara International ASA,

  • WO 03105998 A1 20031224 - UHDE GMBH [DE], et al
  • US 2002127163 A1 20020912 - CHEN JAMES M [US], et al
  • US 2002044902 A1 20020418 - DELAHAY GERARD [FR], et al
  • US 2003143141 A1 20030731 - SCHWEFER MEINHARD [DE], et al
  • JP H09884 A 19970107 - BABCOCK HITACHI KK
  • GROVES ET AL.: "N20 abatement in an EU nitric acid plant: a case study", PROCEEDINGS 539 - PAPER PRESENTED TO THE INTERNATIONAL FERTILIZER SOCIETY AT A MEETING, 21 October 2004 (2004-10-21), London, XP055359267, ISBN: 0 85310 175 2
  • ANONYMOUS: "N20 emissions reduction project at the new acid plant at Nitrogenmuvek Rt. - Project Design Document", VERTIS ENVIRONMENTAL FINANCE, 1 October 2004 (2004-10-01), pages i - iii,1-58, XP055359270, Retrieved from the Internet <URL:https://webapps.sgs.com/quality-network/full/Nitrogenmuvek%20Rt.pdf> [retrieved on 20170328]
  • ANONYMOUS: "Nitric Acid brochure", THYSSENKRUPP, 15 May 2004 (2004-05-15), pages 1 - 20, XP055713466, [retrieved on 20200709]
  • MARKUS KÖGEL, ET AL: "The effect of NOx on the catalytic decomposition of nitrous oxide over Fe-MFI zeolites", CATALYSIS COMMUNICATIONS, vol. 2, no. 9, 1 January 2001 (2001-01-01), pages 273 - 276, XP055713471

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

DE 102005022650 A1 20061116; AU 2006246034 A1 20061116; AU 2006246034 B2 20110217; CA 2607329 A1 20061116; CA 2607329 C 20130205; CN 101175551 A 20080507; CN 105056757 A 20151118; DK 1881867 T3 20160912; DK 3075435 T3 20190909; EA 014430 B1 20101230; EA 200702466 A1 20080428; EP 1881867 A1 20080130; EP 1881867 B1 20160601; EP 3075435 A1 20161005; EP 3075435 B1 20190619; ES 2592911 T3 20161202; ES 2736528 T3 20200102; HU E030972 T2 20170628; HU E045104 T2 20191230; JP 2008540094 A 20081120; JP 5356018 B2 20131204; KR 101315093 B1 20131008; KR 20080011188 A 20080131; MX 2007014097 A 20080207; NO 20076294 L 20071206; PL 1881867 T3 20170831; PL 3075435 T3 20191129; PT 3075435 T 20191001; US 2008241034 A1 20081002; US 7744839 B2 20100629; WO 2006119870 A1 20061116; ZA 200708465 B 20081029

DOCDB simple family (application)

DE 102005022650 A 20050511; AU 2006246034 A 20060427; CA 2607329 A 20060427; CN 200680016079 A 20060427; CN 201510449448 A 20060427; DK 06742714 T 20060427; DK 16162227 T 20060427; EA 200702466 A 20060427; EP 06742714 A 20060427; EP 16162227 A 20060427; EP 2006003895 W 20060427; ES 06742714 T 20060427; ES 16162227 T 20060427; HU E06742714 A 20060427; HU E16162227 A 20060427; JP 2008510443 A 20060427; KR 20077026164 A 20060427; MX 2007014097 A 20060427; NO 20076294 A 20071206; PL 06742714 T 20060427; PL 16162227 T 20060427; PT 16162227 T 20060427; US 91345006 A 20060427; ZA 200708465 A 20071003